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Pocket PC Comm Port Testing Software - Free
GPS units that connect to the Pocket PC through the connector on the bottom of the Pocket PC are usually available to Pocket PC software programs on comm port 1.  CF card and BlueTooth GPS units are usually not accessible on comm port 1 and may be found on any comm port from 2 through 9.  Crux_View.exe is a simple Pocket PC utility that can be used to figure out (using trial and error) which comm port is used to connect to the GPS.  Crux_View can also be used to enable or disable WAAS functionality.  To turn on WAAS functionality, copy the Crux_View.exe utility to your PC by right clicking on it and selecting "Save Target As" from the pop-up menu.  Then use Microsoft ActiveSync to copy it to your Pocket PC.  I recommend that you copy it to the Windows/Start Menu directory.  Run it and use trial and error to find the comm port used by the GPS.  To enable WAAS go to the SBAS tab and set the "SBAS Channel" to "AUTO" and press the "Apply" button.
Crux_View.exe


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Lead-time
GR-271 Holux CF Card GPS
WAAS compatible, Great for use with many Pocket PCs to create a simple, low cost soaring flight computer system.  For details, see the PDA/GPS Systems page.  Works great with the optional GPA-18 External Antenna.  The external antenna is not required in a glider but is useful in a car.

Overview
The GR-271 CF GPS Receiver provides a host of features that make it easy for integration and use. It uses 20 parallel satellite-tracking channels for fast acquisition and reacquisition. It Support CF card type I connector suitable PDA, Hand Held PC or PC device and using Star III/LP low power consumption chipset.

Quick Time to First Fix (TTFF)
WAAS/EGNOS Demodulator
Low Power Consumption Chipset
CF Card Type Connector

Features

  • 20 parallel satellite-tracking channels for fast acquisition and reacquisition.
  • Built-in hardware tracking loop processor WAAS/EGNOS demodulator
  • Low power consumption with Star III chipset.
  • Built-in rechargeable battery for memory and RTC backup and for fast Time to First Fix(TTFF).
  • Support NMEA0183 v2.2 data protocol and SiRF binary code.
  • Enhanced algorithms -SnapLock and SnapStart provide superior navigation performance in urban, canyon and foliage environments
  • Support CF card type I connector suitable PDA, Hand Held PC or PC device.

GR-271 Manual
GR-271 Quick Guide

Tracks up to 20 satellites
Receiver: L1, C/A code
Waterproof : IPX5
Max Update rate: 1 HZ
Antenna Type: Built in Active Antenna
Minimum signal tracked: -159dBm
Dimension: 93.5 * 43 * 11 mm
Weight : < 34g
LED function: Power On/Off and Navigation Update Indication
Operation Temperature: -100C to +700C
Store Temperature: -450C to +850C
Operation Humidity: 5% to 95% No condensing.
Power consumption: <80mA at 3.3V+/-10% input

Position Accuracy
Non DGPS (Differential GPS):
Position: 5-25 m CEP without SA
Velocity: 0.1 m/sec, without SA
Time: 1 usec sync GPS Time

EGNOS/WAAS
Position : < 2.2 m, horizontal 95% of time
<5 m, vertical 95% of time

Acquisition Time
Reacquisition: 0.1sec averaged
Hot start: 8 sec averaged
Warm start: 38 sec averaged
Cold start; 42 sec averaged

Interface
NMEA output protocol: V.2.2
Standard:
Baud rate: 4800 bps
Data bit: 8
Parity: N
Stop bit: 1
Format: GGA,GSA,GSV, RMC.
Optional:
Baud rate: 9600,19200,38400 bps
Format: GLL,VTG, ZDA,or SiRF binary
Interface:
H/W: Compact Flash - CF type I
S/W: Emulated COM Port 1-8

$89 No Longer Available

I recommend the GlobalSat BC-337 available at semsons.com
http://www.semsons.com/bccoflgpsres.html

 
GPA-18 External Active Antenna, 3 m (9.843') cable, compatible with the GR-271 CF GPS
Note: This antenna includes a magnet in the base of the unit which may interfere with an aircraft compass if it is placed near the compass.

Optional Suction Cup Mount for use with the GPA-18 External GPS Antenna

  • Suction Cup Mount for GPS Antenna

    This optional suction cup mount can be used to mount the GPS antenna to a car windshield or a glider canopy.  The magnet in the base of the GPA-18 is sufficient to hold the antenna onto the steel mounting plate.
$29.95 In Stock

Cumulus Soaring, Inc.
Paul E. Remde

8661 Connelly Place
Savage, Minnesota 55378
USA


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